john is here to explain why this time of year means sharks get closer to people. >> today's incident follows the fatal attack that happened in southern california. there have been several noninjury shark encounters this year. it is why some surfers call this month sharktober. the image on the surfboard says it all. a chunk taken out by what is believed to be a great white shark. it seriously injured a 25-year-old surfer off the coast of humboldt county. he had a 14-inch gash from his ribs to his hip. >> we hoped on him right away. me and another guy that happened to be an emt. we hoped on top of him and used our body weight to hold it in and make sure he wasn't bleeding too bad. >> another victim put him in his truck and rushed him to waiting help. >> they were in the back of the car and applying pressure to the wounds. the guy was in shock, but he was still conscious. >> less than a week ago, another surfer was killed in santa barbara county, apparently by a great white. from september through december, sharks head toward the coast to hunt elephant seals and other prey. one of the p